#include<iostream>
#include<Windows.h>
using namespace std;
int main17_3demo()
{//敲桌子
	SetConsoleOutputCP(65001);
	for (int i = 1; i < 101; i++)
	{
		int a = 0, b = 0;	//个位 十位
		a = i % 10;
		b = i / 10;
		if (a == 7 || b == 7 || i % 7 == 0)
		{
			cout << "需要敲桌子的数字:\t" << i << endl;
		}
	}
	system("pause");
	return 0;
}
int main17_3()
{
	for (int i = 0; i < 10; i++)
	{
		cout << "i = \t" << i << endl;
	}
	system("pause");
	return 0;
}